package thread;

public class SyncDemo3 {
    public static void main(String[] args) {
        Boo b1=new Boo();
        Boo b2=new Boo();
        Thread t1=new Thread(){
            public void run() {
                //Boo.dosome();
                b1.dosome();
            }
        };
        Thread t2=new Thread(){
            public void run() {
                //Boo.dosome();
                b2.dosome();
            }
        };
        t1.start();
        t2.start();
    }
}
class Boo{
   // public synchronized static void dosome(){
    public static void dosome(){
        /*
        静态方法中用同步块 类名.class
         */
        synchronized (Boo.class) {
            try {
                Thread t = Thread.currentThread();
                System.out.println(t.getName() + ":正在执行dosome方法");
                Thread.sleep(5000);
                System.out.println(t.getName() + ":执行dosome完毕");
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

    }
}